diff --git a/examples/cluster.c b/examples/cluster.c
index e647ad0..04e71d0 100644
--- a/examples/cluster.c
+++ b/examples/cluster.c
@@ -83,8 +83,11 @@ static void draw_tachometer(cairo_t *cr,
     cairo_fill(cr);
 }
 
-static void draw_speedometer(cairo_t *cr) {
-    cairo_arc(cr, 816, 240, 192, 0, 360);
+static void draw_speedometer(cairo_t *cr,
+                             double x,
+                             double y,
+                             double r) {
+    cairo_arc(cr, x, y, r, 0, 360);
     cairo_stroke(cr);
 }
 
@@ -137,7 +140,7 @@ static void redraw(cairo_t *cr) {
     cairo_paint(cr);
 
     draw_tachometer(cr, 208, 240, 192);
-    draw_speedometer(cr);
+    draw_speedometer(cr, 816, 240, 192);
     draw_thermometer(cr);
     draw_fuel_gauge(cr);
     draw_mfd(cr, 432, 48, 160, 240);